Chaeles moelet



(No Model.)

0. MORL ET WINDING; STOP FOR MAINSPRINGS No. 349,896. Patented Sept. 28,1886.

ATTORNEYS.

INVENTOR Wk r WITNESSES N. PETERS. Fhulu-Uxnographur. Wnhmglnn. 11c.

UNITED STATES PATENT OFFICE.

CHARLES MORLET, OF JERSEY CITY, NEIV JERSEY.

WINDING-STOP FOR MAINSPRINGS.

SPECIFICATION forming part of Letters Patent No. 349,896, datedSeptember 28, 1886.

Application filed November 27. 18. .5. Serial No. 184.097.

To all whom it may concern:

Be it known that 1, CHARLES MORLET, of Jersey City, in the county ofHudson and State of New Jersey, have invented a new and usefulImprovement in Check Mechanisms for the Mainsprings of Watches, of whichthe following is a full, clear, and exact description.

The object of my invention is to provide a new and improved stop orcheck mechanism for preventing the overwinding and consequent breakingof the mainsprings of watches.

The invention consists in the construction and combination of parts anddetails, as will be fully described and set forth hereinafter, and thenpointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a face view of the works ofa watch provided with my improvedstop mechanism for preventing the overwinding of the mainspring. Fig. 2is a top view of the barrel containing the mainspring. Fig. 3 is a.

plan view of the under side of the wheel for turning the arbor of themainspring. Fig. 4 is a cross-sectional view on the line w at, Fig. 1.Fig. 5 is a detail sectional View of the top of the spring-barrel. Fig.6 is a detail plan view of the spring-ring on which the pin is held.

The mainspring A is contained in the circular barrel B, provided withthe teeth 0, for operating the wheels of the watch mechanism in theusual manner. One end of the spring A is secured to the side of thebarrel B, and the other end is secured to the spindle D, passed throughthe center of said barrel,and having its upper end squared to fit in thesquared aperture E in the center of the winding cogwheel F, placed onthe top'of the barrel B, and provided in its under side with the annulargroove G around the central opening, E, and with the circular recess H,in which the split spring-wheel J is pivoted, which is pro vided withthe three (more or less) teeth K and the two shoulders or offsets L.That part of the pivot M on which the wheel J turns is made wedge-shapedin cross-section, as shown in Fig. 4:. A

From the top of the barrel B the pin 0 pro- (No model.)

jects upward and into the annular groove G- in the under side of thewheel F, which pin is secured on a split ring, W, clamped on thedovetailed neck WV, projecting from the under side ofthe top ofthebarrel B. The thin cover ofthe barrel would not have sufficient strengthto hold the pin 0, and for that reason the steel ring has been provided.Snapping the ring IV on is the simplest method of fastening it.

I do not limit myself to this way of fastening the pin, as it may befastened in any other way; but I prefer this construction.

The wheel F is provided with the slot P at the annular groove G, and theface-plate Q of the works is provided with the slot R, as shown.

The usual devices for turning the barrel-arbor D from the crown, as instem-winders, are provided; or the arbor D can be revolved direct bymeans of a key.

The wheel J, being split and made of spring material, has considerablefriction, which holds it and prevents it from revolving too freely.

The operation is as follows: In Fig. 1 the parts are shown in thepositions they have when the mainspring is wound as much as possible. Inwinding the spring the wheel F is revolved in the direction of the arrowa, and turns the arbor D, whereby the mainspring is wound on said arbor.The pin 0, projecting from the top of the barrel B,isfixed, orcomparatively fixed, as the movement of the barrel B is hardlyperceptible, and every time the wheel F makes a revolution the pin 0engages one of the teeth of the wheel J, and thus the said wheel isrevolved in the direction of the arrow 6, and thereby the wheel J isgradually moved into such a position that when the spring is wound asfar as it can be without injury to the same the pin 0 will be adjacentto and rest against the edge of the wheel J, whereby the winding-wheel Fis prevented from being moved farther in the direction of the arrowa-that is, further winding or overwinding of the mainspring isprevented. As the mainspring gradually uncoils, the pin 0 is broughtinto such a position as not to interfere with turning the wheel F in thedirection of the arrow to.

wheel revolving with the said wheel on the arbor, and of a pin on thebarrel and adapted to engage with the teeth of the toothed wheel,substantially as herein shown and described.

2. In a watch, the combination, with the mainspring-barrel and thespring-arbor, of a winding-wheel turning with the arbor, a

toothed wheel in a recess in the wheel on: the

arbor, and a pin on the barrel adapted to engage with theteeth of thetoothed wheel, substantially as herein shown and described;

3. In a watch, the combination, with the mainspringbarrel and thespring-arbor, of the wheel F, mounted on the spring-arbor to turn withthe same, the wheel J, mounted to turn in a recess in the under side ofthegwheel F, and the pin 0, projecting from the top of the spring-barrelinto the groove G in theunder side of the wheel F, and adapted to engagewith the teeth of the wheel J, substantially as herein shown anddescribed.

4. In a watch, the combination, with the plate Q, having the slot R, ofthe'springrbarbor, and the toothed wheel J on the under side of 1 thewheel F, the said wheel F having the slot P, substantially as hereinshown and described.

5. In a watch, the combination, with the wheel F, of the split springw-heel .T, pivoted in the recess in the wheel F, and provided withteeth, substantially as herein shown and described.

6. In awatch,theeombination,withaspringbarrel anda barrel-arbor, ofa'spring-ring held on the under side of the top of the barrel, and a pinprojecting from said spring-ring up through and from the top of thebarrel, a windin g-wheel mounted'on the arbor}, and atoothed wheelpivoted on the winding-Wheel and adapted to engage with theabove-mentionedwheel, substantially ashereinshown" andat:

scribed.

7. In'a w'atch;the combinatiomwit-h as' ring:

barrel" provided on'itsunder side with a pro ject'ion, L of a"spring'ringsnapped on saidpr'ojecti'on, a pin projecting from said ring;up through and from'the to'p of thebarr'el, a winding-wheel on thear-borabove the casingganda toothed wheel= pivotedon the wind'ingw'he'e'l andadapted toeng'agewith said'pin, substantially as herein sho'w'nanddescribed. I

cH'ARLEs MORLE'T,

Witnesses:

OSOARF. GUNZ, O. SEDGWIOK-v

